515
FZUS63 KMKX 092034
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
234 PM CST Sun Nov 9 2025

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.SYNOPSIS...

Gusty northerly winds will persist into tonight between high
pressure of 30.7 inches over the Northern Plains and low pressure
of 29.7 inches lifting through the northeast United States. A Gale
Warning remains in effect through tonight across the southern half
of the lake. A waterspout or two is not out of the question today
through tonight, as a significant lake effect precipitation is
expected along with the passage of a trough.

Winds will remain gusty Monday as the high shifts southeast and
the low continues to lift northeast, with a few gale force gusts
possible again across the south half of the lake. Winds will
become southwest on Tuesday ahead of an approaching shortwave.
Winds may hit gale force yet again Tuesday in the south between
the trough and high pressure over the southeast United States.
Gusty conditions will likely linger into Wednesday, with lighter
winds possible Thursday as high pressure moves through the region.

LMZ261-362-364-366-563-565-567-868-100445-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
234 PM CST Sun Nov 9 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...North winds to 30 kt. Chance of snow. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 7 to 10 ft occasionally to
13 ft.
.MONDAY...North winds to 30 kt. Chance of snow in the morning,
then snow and rain likely in the afternoon. Waves 6 to 9 ft
occasionally to 12 ft.
.MONDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt late in the evening, then diminishing to 10 to 20 kt after
midnight becoming west late. Chance of snow in the evening. Waves
7 to 10 ft occasionally to 13 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.TUESDAY...Southwest winds to 30 kt increasing to gales to 35 kt.
Chance of snow in the morning, then chance of rain in the
afternoon. Waves 5 to 8 ft occasionally to 10 ft building to 8 to
12 ft occasionally to 16 ft.
.TUESDAY NIGHT...West winds to 30 kt increasing to gales to
35 kt. Chance of rain. Waves 8 to 11 ft occasionally to 14 ft
subsiding to 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...Northwest winds to 30 kt increasing to gales to
35 kt. Chance of rain. Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...Northwest gales to 40 kt becoming west gales
to 35 kt. Chance of rain. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY...West winds to 30 kt. Waves 4 to 7 ft occasionally to
9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.FRIDAY...East winds 10 to 15 kt increasing to 10 to 20 kt. Waves
2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-100445-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
234 PM CST Sun Nov 9 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...North gales to 35 kt diminishing to 30 kt. Snow and
slight chance of thunderstorms this evening, then chance of snow
and slight chance of thunderstorms overnight. Waves 10 to 14 ft
occasionally to 18 ft.
.MONDAY...North winds to 30 kt becoming northwest gales to 35 kt.
Snow likely in the morning, then rain likely with a chance of
snow in the afternoon. Waves 8 to 12 ft occasionally to 16 ft
subsiding to 8 to 11 ft occasionally to 14 ft.
.MONDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt
late in the evening, then becoming northwest to 30 kt after
midnight becoming west 15 to 25 kt late. Chance of snow in the
evening. Waves 10 to 14 ft occasionally to 18 ft subsiding to
6 to 9 ft occasionally to 12 ft.
.TUESDAY...Southwest gales to 40 kt. Chance of rain and snow in
the morning, then chance of rain in the afternoon. Waves 6 to
9 ft occasionally to 12 ft building to 10 to 14 ft occasionally
to 18 ft.
.TUESDAY NIGHT...West gales to 35 kt. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 8 to 11 ft occasionally to
14 ft.
.WEDNESDAY...West gales to 35 kt becoming northwest. Waves 8 to
12 ft occasionally to 16 ft.
.WEDNESDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt.
Waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft.
.THURSDAY...West winds 15 to 25 kt becoming southwest. Waves 6 to
9 ft occasionally to 12 ft.
.FRIDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-100445-
MAFOR 0923/
MICHIGAN NORTH 14840 11840 11747 12847. Waves 7 to 11 feet
subsiding to 6 to 9 feet tonight. Waves 5 to 9 feet Monday.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...14857 12847 11740
11747. Waves 10 to 14 feet tonight. Waves 7 to 11 feet Monday.

$$

DDV

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes